Firefighter Luke Jones was at the Centerfolds Cabaret near the 20th and Peoria avenues in Phoenix when Draper pushed him to the floor and struck him several times leading to his death, according to police.

Jones had a brace on one arm and was "restricted in his ability to defend himself due to a pre-existing injury."

The 12-year veteran firefighter left behind a wife and a daughter.

A Daisy Mountain firefighter, 37-year-old Luke Jones, died after an assault at a nightclub in west Phoenix on Jan. 21, 2017, officials said.(Photo: Daisy Mountain Fire Department)

Draper was initially charged with first-degree murder, but struck a plea deal earlier this year, reducing his charge to one count of second-degree murder. He was sentenced to 10 years in prison in May.

Piegari's trial is in its second week in Maricopa County Superior Court. On Tuesday, jurors listened to more than two hours of testimony from Robert Tavernaro, a certified latent fingerprint examiner who was an expert witness for the defense.

When police first made contact with Piegari, he denied knowledge of an assault and later told investigators that security cameras stopped working prior to Jones' death, court documents said.

However, after police confiscated the devices, the footage showed Piegari disconnecting the cameras after the assault, moments before police arrived on scene.

Piegari entered a plea of not guilty to charges of hindering prosecution and tampering with physical evidence early last year.

Maricopa County Superior Court Judge Susan Brnovich set a 6 p.m. deadline on Tuesday for the defense to decide whether the defendant will testify.